1.

If bara, barb, barc are non-coplanar, nonzero vectors and barr is any vector in space then [bara barb barc]barc+[barb barc bara]bara+[barc bara barb]barb=

Answer»

`3[barabarbbarc]BARR`
`[barabarbbarc]barr`
`[barabarbbarc]`
`bar0`

Answer :B


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